Table 12.

Significant univariate predictors considered across all studies grouped by type

Demographics	Bonding opportunities
Non-white – 1 study	Higher grades – 2 studies
Higher socioeconomic status – 1 study	Got married – 2 studies
Male gender – 2 studies, female gender – 1 study	Parental support – 2 studies
	Higher parental expectancies for child – 1 study
Behavior-related
	Less allowance – 1 study
Low intention to smoke in future – 6 studies	Less leisure time – 1 study
Lower pretest smoking – 6 studies	Less strict peers – 1 study
Less smoking experience – 6 studies	Network values agreement – 1 study
Lower alcohol use – 1 study	Less parental education – 1 study
Better diet – 1 study
"Not want to quit now" – 1 study	Psychology
	Less depressed – 1 study
Beliefs/attitudes toward smoking	Less perceived stress – 1 study
	Self-concern – 1 study greater, 1 lower
Higher morality/social control of tobacco use – 3 studies
Stereotypes of smokers thwarted – 2 studies
Negative outcome expectancies of use – 2 studies	Perceived social
Disapprove of others smoking – 2 studies
Positive program outcome expectancies – 1 study	Fewer friends smoke – 12 studies
	No parent/sibling smoking – 4 studies
	Lower social acceptability – 2 studies
Lifestyle perceptions
	Spouse is a non-smoker – 2 studies
High importance on health as a value – 2 studies	Parent don't like smoking – 1 study
High sense of coherence – 1 study	Fewer offers to smoke – 1 study
Perceived lifestyle incongruence – 1 study
Life skills
Greater refusal assertion skill – 2 studies
Higher self-esteem – 1 study
Better decision making skills – 1 study
Better stress management skills – 1 study

Directionality was aligned such that these predictors showed higher quit-rates. Each entry indicates number of studies that found this variable to be a significant predictor.